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- /* Checking macros for fcntl functions. Linux version.
- Copyright (C) 2025-2026 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
- #ifndef _FCNTL_H
- # error "Never include <bits/fcntl-linux-fortify.h> directly; use <fcntl.h> instead."
- #endif
- #ifdef __USE_GNU
- extern int __REDIRECT (__openat2_alias, (int __dfd, const char *__filename,
- const struct open_how *__how,
- size_t __usize), openat2)
- __nonnull ((2, 3));
- #if !__fortify_use_clang
- __errordecl (__openat2_invalid_size,
- "the specified size is larger than sizeof (struct open_how)");
- #endif
- __fortify_function int
- openat2 (int __dfd, const char *__filename, const struct open_how *__how,
- size_t __usize)
- __fortify_clang_warning (__builtin_constant_p (__usize)
- && __usize > sizeof (struct open_how),
- "the specified size is larger than sizeof (struct open_how)")
- {
- #if !__fortify_use_clang
- if (__builtin_constant_p (__usize) && __usize > sizeof (struct open_how))
- __openat2_invalid_size ();
- #endif
- return __openat2_alias (__dfd, __filename, __how, __usize);
- }
- #endif /* use GNU */
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